Answer: CaCO3 = CaO + CO2
Explanation:
CaCO3 = CaO + CO2
This is balanced already.
<u> Elem </u> <u>Reactant</u> <u>Products</u>
Ca 1 1
C 1 1
O 3 3
The major limitation is that C) he can not definitively show what causes the difference.
It may be caused by <em>something the people are doing</em> (if so, what?) or it may be caused by <em>some environmental differences</em> or a<em> combination of both</em>.
